TM 9-2330-379-14&P
SPECIAL INSTRUCTIONS - CONTINUED
1.
Keep it clean: Dirt, grease, oil, and debris only get in the way and may cover up a serious problem. Clean as
you work and as needed. Use dry cleaning solvent PD- 680 on all metal surfaces. Use soap and water when
you clean rubber or plastic material.
2.
Bolts, nuts, and screws: Check them all for obvious looseness, missing, bent, or broken condition. You can’t
try them all with a tool, but look for chipped paint, bare metal, or rust around bolt heads. If you find one you
think is loose, tighten it, or report it to your supervisor if you can’t tighten it.
3.
Welds: Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld,
report it to your supervisor.
4.
Electric cables, wires, and connectors: Look for cracked or broken insulation, bare wires, and loose or broken
connectors. Tighten loose connectors and make sure the wires are in good shape.
5.
Hoses and fluid lines: Look for wear, damage, and leaks, and make sure crimp and fittings are tight. Wet
spots show leaks of course, but a stain around a fitting or connector can also mean a leak. If a leak comes
from a loose fitting or connector, tighten the fitting or connector. If something is broken or worn excessively,
report it to your supervisor.
It is necessary for you to know how fluid leakage affects the status of your vehicle. The following are definitions of the
types/classes of leakage you need to know to determine the status of your vehicle. Learn and be familiar with them, and
remember. when in doubt, notify your supervisor!
Leakage Definitions for Operator/Crew PMCS
Class I
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II
Leakage of fluid great enough to form drops but not enough to cause dripping from item being
checked/ inspected.
Class III
Leakage of fluid great enough to cause drippage from the item being checked/inspected.
CAUTION
When operating with class I or II leaks, continue to
check fluid levels in addition to those checks required
in PMCS. Parts without necessary fluid will stop
working and/or cause damage to the parts.
NOTE
Equipment operation is allowable with minor leakage
(class I or II). Consideration must be given to the fluid
capacity in the item being checked/inspected. When
in doubt, notify your supervisor.
2-13
